The professional model 110 sharpens all your favorite knives from tip to bolster. Incredible sharpness...fast and simple. They are recommended by Cooks Illustrated. * For incredibly sharp knives. * Trizor edges stay sharp longer * Fast, easy to use, no guesswork. * For quality kitchen, household, sportsman and pocket knives. * Sharpens entire cutting edge. * 100% Diamond abrasives, for long life. * Safe for quality knives. Never detempers. * Patented technology. Precision results. * Unique Bi-Level magnetic guides accommodate wide variety of knives. * 3 Stages to perfectly sharp knives: Stage 1 is Presharening, Speeds the sharpening process, removes the old edges and creates the first edge of the knife. * Stage 2, orbiting diamonds hone a second edge on the knife. * Stage 3, Micro diamonds hone and polish a third edge making the knife edge incredibly sharp, strong and long lasting. * 2 year warranty.